/*
 * ProGuard -- shrinking, optimization, obfuscation, and preverification of Java bytecode.
 *
 * Copyright (c) 2002-2018 GuardSquare NV
 *
 * This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public
 * License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later
 * version.
 *
 * This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied
 * warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License along with this program; if not, write to the Free
 * Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
 */
package proguard.classfile.visitor;

import proguard.classfile.*;
import proguard.classfile.util.ClassUtil;

import java.io.PrintWriter;

/**
 * This <code>ClassVisitor</code> and <code>MemberVisitor</code> prints out the class names of the classes it visits,
 * and the full class member descriptions of the class members it visits. The names are printed in a readable, Java-like
 * format. The access modifiers can be included or not.
 *
 * @author Eric Lafortune
 */
public class SimpleClassPrinter implements ClassVisitor, MemberVisitor {
    private final boolean printAccessModifiers;
    private final PrintWriter pw;

    /**
     * Creates a new SimpleClassPrinter that prints to the standard output, with or without the access modifiers.
     */
    public SimpleClassPrinter(boolean printAccessModifiers) {
        // We're using the system's default character encoding for writing to
        // the standard output.
        this(printAccessModifiers, new PrintWriter(System.out, true));
    }

    /**
     * Creates a new SimpleClassPrinter that prints to the given writer, with or without the access modifiers.
     */
    public SimpleClassPrinter(boolean printAccessModifiers, PrintWriter printWriter) {
        this.printAccessModifiers = printAccessModifiers;
        this.pw = printWriter;
    }

    // Implementations for ClassVisitor.

    public void visitProgramClass(ProgramClass programClass) {
        pw.println(ClassUtil.externalFullClassDescription(printAccessModifiers ? programClass.getAccessFlags() : 0,
            programClass.getName()));
    }

    public void visitLibraryClass(LibraryClass libraryClass) {
        pw.println(ClassUtil.externalFullClassDescription(printAccessModifiers ? libraryClass.getAccessFlags() : 0,
            libraryClass.getName()));
    }

    // Implementations for MemberVisitor.

    public void visitProgramField(ProgramClass programClass, ProgramField programField) {
        pw.println(ClassUtil.externalFullClassDescription(printAccessModifiers ? programClass.getAccessFlags() : 0,
            programClass.getName()) + ": "
            + ClassUtil.externalFullFieldDescription(printAccessModifiers ? programField.getAccessFlags() : 0,
                programField.getName(programClass), programField.getDescriptor(programClass)));
    }

    public void visitProgramMethod(ProgramClass programClass, ProgramMethod programMethod) {
        pw.println(ClassUtil.externalFullClassDescription(printAccessModifiers ? programClass.getAccessFlags() : 0,
            programClass.getName())
            + ": "
            + ClassUtil.externalFullMethodDescription(programClass.getName(),
                printAccessModifiers ? programMethod.getAccessFlags() : 0, programMethod.getName(programClass),
                programMethod.getDescriptor(programClass)));
    }

    public void visitLibraryField(LibraryClass libraryClass, LibraryField libraryField) {
        pw.println(ClassUtil.externalFullClassDescription(printAccessModifiers ? libraryClass.getAccessFlags() : 0,
            libraryClass.getName()) + ": "
            + ClassUtil.externalFullFieldDescription(printAccessModifiers ? libraryField.getAccessFlags() : 0,
                libraryField.getName(libraryClass), libraryField.getDescriptor(libraryClass)));
    }

    public void visitLibraryMethod(LibraryClass libraryClass, LibraryMethod libraryMethod) {
        pw.println(ClassUtil.externalFullClassDescription(printAccessModifiers ? libraryClass.getAccessFlags() : 0,
            libraryClass.getName())
            + ": "
            + ClassUtil.externalFullMethodDescription(libraryClass.getName(),
                printAccessModifiers ? libraryMethod.getAccessFlags() : 0, libraryMethod.getName(libraryClass),
                libraryMethod.getDescriptor(libraryClass)));
    }
}
